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ISOCIL MW-14

ISOCIL MW-14
Isocil MW-14 is a high performance biocide for preserving metal working fluids, metal cleaning
fluids, hydraulic Fluids, electrodeposition systems, polymer emulsions, natural latex, pigment
dispersions, mineral slurries, paints, coatings and adhesives. It has extremely broad spectrum
activity, controlling bacteria, fungi and yeasts while being compatible with most components in a
formulation. Very low use levels make this product one of the most cost effective solutions on the
market.
Chemical Composition
Isocil MW-14 is comprised of two primary active compounds, 5-chloro-2-methyl-4-isothiazolin-3-
one and 2-methyl-4-isothiazolin-3-one, in a dilute aqueous solution that permits easy and safe
handling.
Active Ingredients (nominal)
% WT/WT
5-Chloro-2-methyl-4-isothiazolin-3-one: 10.80%
2-Methyl-4-isothiazolin-3-one: 3.83%
Total active ingredients: 14.63%
Inert Ingredients
Magnesium salts (As Mg(NO3)2:  ~23%
Water: ~63%
Typical Properties
Appearance: Clear Liquid
pH: 2-4
Odor: Mild

Compatibility
Isothiazolinones are generally compatible with most components of industrial formulations. However,
the presence of a few agents will cause degradation of the active ingredients (and therefore some
care is necessary). Agents such as thiols, mercaptans, secondary amines, sulfides and other
nucleophiles are to be avoided in formulations. Conditions of high heat for long periods of time ( >
50C) and pH above 9 will lead to loss of activity.
The seller makes no warranty, expressed or implied, concerning the accuracy of any results to be obtained from the use
of this information and no warranty is expressed or implied concerning the use of these products other than indicated
within. The buyer assumes all risks of use and/or handling. No statement is intended or should be construed as a
recommendation to infringe any patent Revised 23-Mar-2011 Printed in the USA

Biocidal Performance
Isocil MW-14 isothiazolinone is a more cost effective biocide preservative due to the extremely low
use levels required. While the specific use levels are application dependent, the following MIC values
for isothiazoline activities are indicative of the effectiveness of the product.
Bacteria
ATCC
No.
PPM,
Isothiazoline
1.5% Active
Bacteria
ATCC
No.
PPM,
Isothiazoline
1.5% Active
Gram-Negative Gram-Positive
Achromobacter parvulus 4335 300 Brevibacterium ammoniagenes 6871 600
Alcaligenes faecalis 8750 300 Bacillus cereus 11778 600
Enterobacter aerogenes 3906 600 Bacillus subtilis 6633 600
Escherichia coli 11229 600 Sarcina lutea 9341 600
Flavobacterium suaveolens 958 600 Staphylococcus aureus 6538 750
Klebsiella pneumoniae 13883 600 Staphylococcus epidermidis 155 600
Proteus vulgaris 8427 600 Staphylococcus agalactiae 624 600
Pseudomonas aeruginosa 15442 600
Pseudomonas cepacia
Pseudomonas fluorescens
Pseudomonas oleoverans
25416
13525
8062
600
600
300
Fungi
ATCC
No.
PPM,
Isothiazoline
1.5% Active
Salmonella choleraesuis (typhi) 6539 600 Asperigillus niger 9642 >750
Shigella sonnei 9290 600 Asperigillus oryzae 10196 750
Serratia marcescens 8100 600 Chaetomium globosum 6205 600
Gliocladium fimbriatum 32913 >750
Mucor rouxii 24905 >750
Penicillium funciculosum 9644 750
Yeast
ATCC
No.
PPM,
Isothiazoline
1.5% Active
Pullularia (Aureobasidium)
pullulans
Rhizopus stolonifer
9348
10404
>750
750
Candida albicans 11651 600
Rhototorula rubra 9449 600
Saccharomyces cerevisiae 2601 600

Safety and Handling
Isothiazolinones at 14% active, are corrosive and potential skin sensitizers. As such, keeping
these solutions away from the skin is essential. Due diligence must be maintained at all times
while handling these materials. When working with Isocil MW-14, ensure that workers will not
come in direct contact with the product. Proper selection of personal protective equipment is
essential. Even if the slightest spill were to be absorbed onto a worker’s clothing, it may work its
way through and cause a delayed skin burn. If significant aerosolization is expected, then the
appropriate self contained breathing apparatus is required.

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